Cook the jasmine rice with the salt in a rice cooker or on the stovetop according to package instructions. Once cooked, fluff with a fork and gently stir in the fresh lime juice, lime zest, chopped cilantro, and additional salt to taste.
Heat the olive oil in a pan over medium heat. Add the onion and cook for 4-5 minutes, until softened and beginning to brown.
Add the garlic and jalapeño and cook for another 2-3 minutes.
Stir in the cumin, smoked paprika, black pepper, and salt and cook briefly until fragrant, about 30 seconds.
Add the vegetable broth and black beans. Bring to a simmer, then reduce the heat to medium-low and cook for about 15-20 minutes, stirring occasionally, until the liquid has reduced and the beans have thickened slightly.
Gently mash some of the beans with the back of a spoon or potato masher. Continue cooking for another 2-3 minutes, or until they reach your desired consistency. Finish with fresh lime juice and adjust the seasoning to taste.
Heat the oil in a large pan over medium. Add the plantain slices in a single layer and cook for a few minutes on each side, until deeply golden and caramelized. Sprinkle with salt.
Divide the cilantro lime rice, black beans, and caramelized plantains between bowls. Add lettuce, avocado, pickled red onions, and fresh cilantro. Drizzle with cilantro lime crema and serve.